A new experimental method to search for T-violating transverse muon polarization (PT) in the K+→π0μ+ν (Kμ3) decay is proposed. In this new experiment, the measurements of the μ+ momentum vector, the π0 momentum vector, and the μ+ polarization will be performed by the same electro-magnetic calorimeter. One of key issues is the choice of a scintillation material which can preserve the μ+ spin polarization for several μ+ lifetimes. A test experiment to measure the residual μ+ polarization in a CeF3 scintillating crystal was performed at J-PARC Material and Life Science Facility (MLF). We concluded that the residual μ+ polarization in CeF3 is high enough to perform the new T-violation experiment.
|Journal||Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment|
|Publication status||Published - 2019 Nov 21|
- Kaon decay
- Muon spin polarization
- Muon spin preservation in scintillating materials
ASJC Scopus subject areas
- Nuclear and High Energy Physics